% Gesture recognition with Matlab.
% Copyright (C) 2008  Thomas Holleczek, ETH Zurich
% 
% This program is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
% 
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
% GNU General Public License for more details.
% 
% You should have received a copy of the GNU General Public License
% along with this program.  If not, see <http://www.gnu.org/licenses/>.


function x = compress(discretized)

x = zeros(1);
x(1) = discretized(1);
dataSize = size(discretized);

for i = 2:dataSize(2)
    
    lastIndex = size(x);
    lastIndex = lastIndex(2);
    
    if (discretized(i) == x(lastIndex))
        % merge discretized values, i.e. don't do anything
    else
        % do not merge discretized values, i.e. append current value to
        % result
        x(lastIndex + 1) = discretized(i);
    end
    
end